Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January brings the lowest temperatures, with an average high of 37.4°F (3°C) and an average low of 25.7°F (-3.5°C).Humidity
The average relative humidity in January in Upper Darby, Pennsylvania, is 74%.Rainfall
January is the month with the least rainfall in Upper Darby. Rain falls for 6.6 days and accumulates 1.46" (37mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Upper Darby, Pennsylvania, in January, during 3.3 snowfall days, 1.5" (38mm) of snow is typically accumulated. In Upper Darby, during the entire year, snow falls for 11.3 days and aggregates up to 6.18" (157mm) of snow.Daylight
The average length of the day in January in Upper Darby is 9h and 43min.On the first day of January in Upper Darby, sunrise is at 7:22 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in January is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What time of the year is the coldest in Upper Darby?
How cold is January in Upper Darby?
What is the average humidity in January in Upper Darby?
What is the driest month in Upper Darby?
How much does it rain in Upper Darby in January?
How much does it snow in Upper Darby in January?
How many hours of daylight does Upper Darby have in January?
What time are sunrise and sunset in January in Upper Darby?
How many hours of sunshine does Upper Darby have in January?
When is the lowest UV index in Upper Darby?
How high is the UV index in January in Upper Darby?
Average temperature in January
Upper Darby, PA
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
Upper Darby, PA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Upper Darby, PA
- Average wind speed in January: 8.4mph
The windiest months (with the highest average wind speed) are February, March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Upper Darby, PA
- Average humidity in January: 74%
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in January
Upper Darby, PA
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in January
Upper Darby, PA
- Average rainfall days in January: 6.6 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in January
Upper Darby, PA
- Average snowfall in January: 1.5"
The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Upper Darby, PA
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Upper Darby, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in January
Upper Darby, PA
- Average sunshine days in January: 20.8 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in January
Upper Darby, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Upper Darby, PA
- Average cloud cover in January: 44
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Upper Darby, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Upper Darby, Pennsylvania, USA
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